MESON Chess Problem Database

Problem Display
PID: 101181 (q2R1R1b/p1P1k3/1p6/1Pr5/KQ1p1N2/p4B1n/8/6r1 w - - 0 1)

Pape, Edouard

Good Companions, 1922

q2R1R1b/p1P1k3/1p6/1Pr5/KQ1p1N2/p4B1n/8/6r1

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.c8S#
    • 1...Qe4
      • 2.c8S#
    • 1...Qd5
      • 2.c8S#
    • 1...Qxd8
      • 2.cxd8Q#
  • Keys
    • 1.Bd5!
      • threat
        • 2.Rf7#
      • 1...Qxd5
        • 2.c8S#
      • 1...Qxd8
        • 2.cxd8Q#
      • 1...Rg7
        • 2.Qe1#
      • 1...Sg5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD,XB(A)::P=S
    • Q(i);N_GUARD::P=S
    • Q(i);OGATE,XR(G)::PXQ(i)=Q
  • Actual
    • B(A);
    • Threat
      • R1(H)
    • Vars
      • Q(i);N_GUARD,XB(A)::P=S
      • Q(i);OGATE,XR(G)::PXQ(i)=Q
      • R(a);N_GUARD,S_CUTB(j)::QAR(C)
      • S(c);S_CUTR(a)::S(D)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).